NESSiE - Nonlinear waveguides for quantum entangled sources at telecom wavelength

Simulated profile of a Bragg reflection lightwave mode in an AlGaAs Bragg reflection ridge waveguide.
© Fraunhofer IAF
Simulated profile of a Bragg reflection lightwave mode in an AlGaAs Bragg reflection ridge waveguide.

The project NESSiE will realize entangled photon pair sources based on nonlinear waveguides in the materials periodically polarized lithium niobate (PPLN) and aluminum gallium arsenide (AlGaAs) for quantum imaging and eavesdrop-proof quantum communication. These sources enable the integration with other optical and electronic components on chip level and thus a reduced size, weight and power (SWaP) of the components, which is an essential prerequisite for the realization of practical applications

PROJECT TITLE

NESSiE - Nonlinear waveguides for quantum entangled sources at telecom wavelength

 

PROJECT DURATION

2019 − 2020

FUNDING SOURCE

Fraunhofer Gesellschaft

COORDINATOR

Fraunhofer Centre for Applied Photonics CAP

OBJECTIVES

  • On-chip entangled photon pair sources in the wavelength range 1500-1600 nm based on the materials periodically-poled lithium niobate (PPLN) as well as alluminium gallium arsenide (AlGaAs).
  • Demonstration of a quantum random number generator based on the sources for entangled photons developed within the project.

 

Further Information#

Fraunhofer IAF

Quantum Sensors

The developments at Fraunhofer IAF in the field of quantum sensor technology contribute to the fact that quantum technologies quickly move from the laboratory stage into application.

Fraunhofer IAF

Optoelectronic Devices

In the field of optoelectronics, we mainly develop photodetectors and semiconductor lasers for the infrared spectral range (wavelength > 1,5 µm), but also for the solar-blind ultraviolet spectral range.